Honda CB400 Super Four Hyper VTEC Revo (NC42) — OEM Fluid, Tire Pressure & Maintenance Specs
399cc Liquid-Cooled Inline-4 DOHC 16V Hyper VTEC Revo · Source: Honda CB400 Super Four Hyper VTEC Revo (NC42) (2008–2022) Official Owner’s Manual Maintenance Specifications
According to the Honda CB400 Super Four Hyper VTEC Revo (NC42) (2008–2022) Official Owner’s Manual Maintenance Specifications, the 2008–2022 Honda CB400 Super Four Hyper VTEC Revo (NC42) (chassis NC42) requires 3 L (3.17 US qt) of SAE 10W-30 (JASO MA, API SG/SJ or higher) engine oil for a drain-only change and 3.2 L (3.38 US qt) with filter service (15410-MCJ-000 / HF204). Standard solo cold tire pressure is 250 kPa / 2.50 bar / 36 PSI front (120/60ZR17 M/C (55W)) and 290 kPa / 2.90 bar / 42 PSI rear (160/60ZR17 M/C (69W)), paired with 4× NGK CR8EH-9 spark plug(s) and a YTZ10S battery.
Drain only: 3 L (3.17 US qt)
R 290 kPa (2.90 bar)
Est. Range: ~387 km (240 mi)
1. Engine Lubrication, Filter & Clutch Specifications
| Clutch Architecture | Wet Multi-Plate Manual Clutch NEVER use JASO MB |
|---|---|
| Recommended Viscosity & Grade | SAE 10W-30 (Alt: SAE 10W-40) · JASO MA · API SG/SJ or higher |
| Oil Volume (Drain / With Filter / Overhaul) |
• Drain only: 3 L (3.17 US qt) • With filter/strainer: 3.2 L (3.38 US qt) • Complete dry overhaul: 3.8 L (4.02 US qt) |
| OEM Oil Filter Code & Type | 15410-MCJ-000 / HF204 |
| Correct Oil Level Check Method | Hold bike upright on level ground 3–5 min after warm shutdown; read crankcase sight glass |
| Oil Drain Bolt Torque | 30 N·m (22.1 lb-ft / 3.06 kgf·m) — Use fresh crush washer |
2. Cold Tire Pressures, Wheels, Ignition & Drivetrain
| Front / Rear OEM Tire Sizes | Front: 120/60ZR17 M/C (55W) · Rear: 160/60ZR17 M/C (69W) (Tubeless) |
|---|---|
| Cold Tire Pressure — Solo Riding |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| Cold Tire Pressure — 2-Up / Loaded Touring |
Front: 250 kPa / 2.50 bar / 36 PSI Rear: 290 kPa / 2.90 bar / 42 PSI |
| OEM Spark Plug & Quantity | NGK CR8EH-9 × 4 (Gap: 0.8–0.9 mm) |
| OEM Battery Code & Rating | YTZ10S (12V 8.6Ah MF AGM) |
| Final Drive Maintenance | 525 Heavy-Duty Sealed X-Ring Chain — Maintain 25–35 mm slack and clean/lube regularly |
| Brake Fluid & Coolant | DOT 4 · Silicate-free ethylene-glycol OAT coolant for aluminum radiators (50:50 premix) |
3. Ergonomics, Range & Scheduled Service Intervals
| Displacement · Max Power · Peak Torque | 399 cc · 53 hp @ 10,500 rpm · 38 N·m (28.0 lb-ft) @ 9,500 rpm |
|---|---|
| Seat Height & Wet Curb Weight | 755 mm (29.7 in) · 201 kg (443 lbs) |
| Fuel Tank & Est. Real-World Range | 18 L (4.8 US gal) · ~21.5 km/L → ~387 km (240 mi) |
| OEM Scheduled Maintenance Intervals |
• First Break-In: 1,000 km • Engine Oil / Filter: 10,000 km / 20,000 km • Air Filter / Spark Plug: 18,000 km / 20,000 km • Valve Clearance Check: 24,000 km |
4. Generation Cutoffs & Real-World Wrenching Gotchas
Model-Year & Chassis Generation Notes
Introduced in 2008 as chassis NC42 with PGM-FI fuel injection, then facelifted in 2014 with an LED headlight, revised subframe, 10-spoke wheels, and updated intake tuning.
Oil & Clutch Mechanical Engineering Note
Hyper VTEC slide pins engage all 16 valves purely via engine oil pressure above 6,300 rpm, so low sump level or shear-degraded oil directly causes harsh or delayed VTEC actuation.
Garage Wrenching Gotchas
- Unbolt and tilt the radiator forward carefully without kinking hoses to reach cylinders 2 and 3 when servicing the four NGK CR8EH-9 spark plugs.
- Checking valve clearances on VTEC cylinders requires special pin-stopper plates and separate bucket measurement steps compared to standard shim-under-bucket valves.
5. Frequently Asked Questions (FAQ)
What oil volume, JASO grade, and oil filter code does the Honda CB400 Super Four Hyper VTEC Revo (NC42) (2008–2022) require?
Because its wet multi-plate clutch shares engine oil with the gearbox, run SAE 10W-30 (JASO MA) at 3 L (3.17 US qt) drain-only and 3.2 L (3.38 US qt) with filter (15410-MCJ-000 / HF204).
How do you accurately check the oil level on the CB400 Super Four Hyper VTEC Revo (NC42), and what are its service intervals?
Hold the motorcycle dead-vertical on level ground 2–3 minutes after warm shutdown and verify the oil sits mid-way between the Upper and Lower marks in the crankcase sight glass—never on the sidestand. Torque the drain plug to 30 N·m with a new crush washer. Factory oil change intervals are every 10,000 km, with valve clearance inspection every 24,000 km.
What are the cold tire pressures, puncture repair type, seat height, and range of the CB400 Super Four Hyper VTEC Revo (NC42)?
Fitted with 120/60ZR17 M/C (55W) front and 160/60ZR17 M/C (69W) rear tubeless rims (compatible with roadside plug kits), set cold tire pressures to 36 / 42 PSI (250/290 kPa) solo or 36 / 42 PSI loaded. Seat height is 755 mm (29.7 in) at 201 kg wet weight, delivering ~387 km per 18 L tank.